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Adapted from the Lake Ontario-St. Lawrence River Study


RAPIDS- A turbulent and swift-flowing section of a river.

REACH- A length of shore with fairly uniform onshore and offshore physiographic features and subject to the same wave dynamics.

REBOUND (CRUSTAL MOVEMENT)- The uplift or recovery of the earth's crust in areas where a past continental glaciation had depressed the earth's crust by the weight of the ice.

RECESSION- A landward retreat of the shoreline by removal of shore materials in a direction perpendicular or parallel to the shore.

RECREATIONAL BOATING AND TOURISM TECHNICAL WORK GROUP- A group of technical experts that will investigate the impacts of water levels on individual boaters, marinas, and boating-related tourism for the Study.

REGULATION -Artificial changes to the lake levels or their outflows for specific purpose or to achieve certain objectives.

REGULATIONS- Control of land and water use in accordance with rules designed to accomplish certain goals.

RELIABILITY- While ranking plans, it is the percentage of time that a criterion is met (i.e., 4,848 out of 4,848 quarter-months= 100%).

RESILIENCE- During plan ranking, it is the average amount of time it takes to get back in compliance (how long). It is calculated as the total number of quarter-months of failure divided by the number of failures.

RESILIENCY- The ability to readily recover from an unexpected event, either because costs were not significantly affected by changing levels, another source of income provided a cushion to levels induced costs, and/or a conscious effort was made on the part of the interest.

RESERVOIR- A place where water is collected and kept for use when wanted, as to supply a fountain, a canal, or a city by means of aqueducts, or to drive a mill wheel, or the like.

REVETMENT- A natural (grass, aquatic plants, etc.) or artificial (concrete, stone, asphalt, earth, sand bag, etc.) covering (facing) to protect an embankment (raised structure made of soil, rock or other material) or other structure (such as a cliff) from erosion.

RIPARIAN - Of, relating to or found along a shoreline. RIPARIANS- Persons residing on the banks of a body of water. RIVERINE- Of or relating to a river or a riverbank.

RUNOFF- The portion of precipitation on the land that ultimately reaches streams and lakes.

  • Background

Learn more about the history of regulating water levels and flows on Lake Ontario

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Let us know your opinions and concerns about water levels and flows into the LOSLR system.

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